“…MnOOH is thought to be a precursor to ε-MnO 2 which will precipitate in the cell mud, while the disproportionation of Mn 3+ results in the creation of the γ-MnO 2 found on the scale on the anodes for the case of PbCaSn anodes (Ipinza et al, 2003(Ipinza et al, , 2007.…”